【摘要】 目的对城市再生水中壬基酚存在的潜在人体内分泌干扰风险进行评价,分析污水再生利用的安全性,为制定再生水中壬基酚的标准提供参考依据。方法基于某再生水厂出厂水中壬基酚的含量,参考美国环境保护署风险信息综合系统中酚类物质的健康风险评价参数和相关机构及文献中有关壬基酚的毒理试验数据,采用四步健康风险评价法,对城市污水再生后回用于不同用途时,再生水中壬基酚对人体健康危害风险进行了评价。结果不同再生水暴露途径下壬基酚对人体健康危害风险依次为:城市绿化作业(园林工人)、道路喷洒作业和污水处理、电厂冷却作业>农田灌溉>游泳用水>公园补水、绿化>建筑中水>城市绿化(行人)、道路压尘降温,这些暴露途径的健康危害风险均低于风险评价标准。因此,它对人体的内分泌干扰危害风险可以忽略。结论再生水用于市政杂用、城市河湖补水和农田灌溉时壬基酚对人体健康的危害风险是可以被接受的。更多还原

【Abstract】 Objective To assess the risk of nonylphenol in reclaimed wastewater used in city to damage the human endocrine system and to present the data for making the related water quality standard. Methods Based on the monitored results of nonylphenol in the reclaimed wastewater from a reclaimed water plant in Beijing and referenced the phenol toxic parameter from integrated risk information system of the Unite State Environmental Protection Agency and the nonylphenol tested toxicity data from related literature, the risk assessment of nonylphenol on human health was conducted using four step health risk assessments when the sewage was reclaimed as a different approach to use. Results The endocrine disruption risk of nonylphenol in reclaimed wastewater on human health was about in a range of 10-8-10-10, which could even be ignored. Conclusion The risk of nonylphenol is acceptable to human health when the reclaimed wastewater were used for municipal, agricultural irrigation, urban lake supplement, then, nonylphenol as a human health risk factor can be ignored when making the standard of nonylphenol in reclaimed water.更多还原